Casing and tubing hanger system
US6015009A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1998 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Feb 23, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/0422
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hanger system for supporting production casing and coiled tubing in a surface pipe has a casing head supported on the surface pipe and has a vertical opening therethrough with an internal circumferential load shoulder. A casing hanger is supported within the casing head vertical opening on the load shoulder, and has a vertical casing opening, the upper portion of which has a conically shaped surface, and exteriorly of the casing opening, a tubing opening. A tubing support plate is received in the casing head vertical opening and has a vertical casing opening dimensioned to receive casing therethrough and, exteriorly of the casing opening, a vertical tubing opening dimensioned to receive tubing therethrough, the upper portion of the tubing opening having a conically shaped surface. Segmented casing slips are positioned in the casing hanger conically shaped surface are configured to engage and support casing. Segmented tubing slips are positioned in the tubing support plate tubing opening conically shaped surface to engage and support tubing. A packoff flange has a vertical casing opening dimensioned to receive casing therethrough and has a recess to receive the upper end of the tu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.